Combined force-pump and spray-tank.



R! S. SHELDON.

- COMBINED FORGE PUMP ANDSPRAY TANK.

WITNESSES: i

APPLIOATION FILED OOT. 12,1906.

Patented May 11, '1909.

5 l1: 5 I] l4 l6 l7 INVENTOR irzmfjw BY I M T M I ATTORNEYJf 'Roscon s. SHELDON, OF WEST ALLIS, WISCONSIN.

COMBINED FORCEJPUMP AND SPRAY-TANK.

Specification of Letters Patent.

Patented May 11, 1909.

Application filed October 12, 1906. Serial No. 338,561.

To all whom it may concern: T

Be it known that I, Roscon S. SHELDON, a citizen of the United States, residing at VI est Allis, county of Milwaukee, and State of lVisconsin, have invented new and useful Improvements in a Combined Force-Pump and Spray-Tank, of which the following is a speci lic'ation.

My invention relates to improvements in a combined pump, pneumatic pressure tank and sprinkler, and it pertains to that class of by the elasticity of the air confined therein above the water, my device being so con structed that when the pressure has been reduced by drawing of? the waterand it is not convenient to renew the pressure by again replacing the supply of water as it is frequently the case when using the device for sprinkling vegetables the pressure may be renewed by employing the same power for pumping air into the tank, the pump being adapted to be used for pumping both air and water.

The construction of my invention is we plained by reference to the accompanying drawing which represents a longitudinal vertical section'thereo'f.

The several parts are referred to'by index characters.

1 represents an air tight tank and 2 the by the valve 5 which valve is'hinged at one side to one side of the aperturelormed in the piston.

6 is a bracket by which motion is communicated from the piston rod 7 to the piston.

8 is an operating handle which is adapted J to be manually operated by the user.

The rod 7 is connected with the cylinder 2 of the pump through an ordinary stuffing nut The aperture 4 is closed however, the piston is drawn upward against the contents above it, said valve will be thrown downward and opened, when with the return or downward stroke, said valve 5 will be closed by the action of the spring 3 cooperating with the liquid below it.

The cylinder 2 is provided at its lower end with a cylinder head 14 through which an outlet aperture 15 is formed. The aperture 15 is closed with the valve 16, said valve being hinged at one side to the cylinder head 14:.

17 is a spring by which the valve 16 is closed with the upward movement of the piston. When, however, the piston is moved downward, said valve will open and the contents of the cylinder will be discharged into the tank 1.

- 18 is the upper cylinder head of the pump which is provided with an internal screw threadedbearing 19 for the reception of the annular collar 20. The annular collar 20 is provided with an external screw thread 2].. The collar 20 is first soldered or otherwise secured to the exterior surface of the pump cylinder 2'. The cylinder head 18 is then screwed down about mid-way upon. the collar 20. This being done the set screw 22 is turned inwardly so as to impinge against the collar and prevent the head 18 from turning thereon. When the head, collar and pump cylinder have been thus secured together, the pump cylinder is placed within the tank 1 when the lower portion of the collar 20 is screwed into the inclosing collar 23. The collar 23 is soldered. or otherwise rigidly secured to the tank 1. It will be obvious that when desirous to remove the piston and cylinder from the tank 1 together this object is readily accomplished by turning the cylinder head 18, when the collar 20 will be unscrewed from the collar 23, and the cylinder 2 together with the piston therein can be readily removed from the tank. If, however, it should be desired to remove the piston from the pump cylinder without removing the cylinder from the tank the set screw 24 is turned in slightly so as to impinge the periphery of the collar 20 and prevent the collar from unscrewing and the set screw 22 is turned back in its bearings so as to become disengaged from the collar 20 when the cylinder head 18 can be readily unscrewed from said collar 20 and the piston withdrawn from the cylinder witlpout the cylinder being removed from the tan z.

25 is an inlet duct through which the water, air or other fluid is drawn from the exterior into the puinp.

26 is an outlet duct through which the contents of the tank are discharged.

27 is a spray nozzle by which the contents of the tank may if desired be discharged in a spray.

The duct 26 communicates with the lower end of the tank 1 through the pipe where by when the required air pressure is a lied within the tank, the greater portion ot tl: liquid contents will be forced out through said duct. it will be understood that the liquid in the tank will be forced by the coinpressed air above out through the pipe 28. 29 is a fluid controlling valve by which the escape of the liquid under pneumatic pres sure is controlled.

While my device is especially adapted to be used for spraying paris green,-liquids, and other substances upon growing vegetation for the purpose of destroying insects, it is obvious that if desired the duct may be connected with an ordinary cistern or w r reservoir and the duct 26 with the water pipes of an ordinary dwelling; in which case a person may by operating he punip store up a supply of water in the tank 1 under pressure which will be discharged to any oi the faucets connected therewith as soon as they are opened. ll hen my device is thus used the sizeof the tank may be increased proportionately according to the quantity of water it is desirous to store.

30 is a strap by which the tank may be suspended from a persons shoulder when using the same for spraying vegetation. The strap 30 is suspended at the respective ends of the tank with links and fastening plates in the ordinary manner.

It Will be obvious that when the required air has been supplied and the valve 2?; opened the contents of the tank will be discharged therefrom under pneumatic pressure through the ducts 26 and nozzle 27. It will of course be understood that when the liquid is thus discharged from the tank, the pressure will gradually diininish. Assuming that the pressure has been thus diminished when the user is at a distance from the liquid supply he can readily restore the pressure by a few strokes of the piston by means of which an additional supply of air will be forced into the tank.

It is a well known fact that in operating a pinup, the necessary power is much more easily applied with a down stroke than with an upstroke oi the piston. P the arrange ment of the cooperating parts shown and described, the liquid from the exterior is drawn into the cylinder oi the pump above the piston, while the liquid below the piston is simultaneously forced therefrom into the inclosing tank, whereby the entire work oi both drawing the liquid into the cylinder and forcing it ther from is performed by the down stroke of the piston, it hei understood that the liquid ahove the piston simply passes through the check valve in the piston to the space in the pinup cylinder below as the piston is r ised, whereh {he operrlor has simply to over-come the 4 r, ion oi the upslrol-ie oi the pisi ou.

moving parts with the l'laving thus described my invention what l claim as new and desire to secure by Letters Patent is in a device of the described class the conibination of air tight tank, a pump cylinder centrev ysuspended at its upper end from the upper end of said tank, a cylinder head adapted to close the upper end oi said pump cylinder and provided with a central aperture, a piston rod located in said central aperture, an air tight packing local ed around said piston rod, a piston connected with the lower end oi said piston rod and provided with a central aperture, :1 ywlve adapted to close the central aperture of said piston with a dowi werd stroke, a hndcr head connected with the lower end oi said cylinder and provided with a central aperture, a valve adapted to close the aperture in said last named cylinder head with the upstroke of the piston, means l'or automatically closing both oi said valy es, and an inlet liquid duct connected with said cylinder head above the piston, means for securing said cylinder head to said cylinder and means for securing said cylinder to said air l'i rhl tank, the arrangement of the coi'iperatiugg parts being such that the pump cylinder above the piston lilied while the liquid l)(. low the piston is simultaneously forced from the cylinder by the down stroke ol the piston.

in testimony whereof l. allix my signature in the presence of two witnesses.

i ECO?) Siil llilithy ill) 

